Period Tracker

Period Tracker — Your Private Cycle Companion

Take control of your cycle with a period tracker that respects your privacy. Track your period, predict your next cycle, log symptoms, and get reminders — all completely offline with AES-256 encryption.

No account. No ads. No tracking. Your data never leaves your device.

Track Your Cycle

Period Tracker makes it effortless to log and monitor your menstrual cycle. Mark your period start and end dates with a simple tap. The smart calendar shows your past periods, predicted future periods, fertile window, and ovulation window — all color-coded for instant clarity.

Your cycle data stays on your device. We never see it, store it, or share it.

Predict Your Next Period

Our prediction engine learns from your history. After just two logged periods, Period Tracker automatically calculates your average cycle length and predicts your next period date with a countdown on the home dashboard.

- Automatic cycle length calculation
- Next period countdown with visual ring
- Current phase detection (menstrual, follicular, ovulation, luteal)
- Fertile window estimation

Log Everything That Matters

The daily log form is designed for speed. No typing required for the essentials:

Flow Level
Choose from 5 levels with emoji: None, Spotting, Light, Medium, Heavy.

Pain Level
Slide from 0 to 10 with color-coded feedback (green → yellow → red).

Mood
5 emoji options from Very Low to Very Good — one tap to select.

Physical Symptoms
Quick-select from 16 common symptoms with emoji chips:
Headache · Bloating · Cramps · Breast Tenderness
Fatigue · Insomnia · Acne · Backache
Nausea · Constipation · Diarrhea · Appetite Change
Dizziness · Hot Flashes · Joint Pain · Muscle Pain

Notes
Add free-text notes for anything else you want to remember.

Smart Calendar

The full-month calendar shows everything at a glance:

Rose = Confirmed period days
Light Rose = Predicted period days
Blue = Fertile window
Green = Days with logged symptoms
Warm Accent = Today

Tap any day to quickly mark it as period start or end. The calendar adapts as you log more data, becoming more accurate over time.

100% Offline & Encrypted

Your health data is deeply personal. Period Tracker was built with that principle from day one.

Zero Internet Required
No internet permission is requested. No data is ever transmitted anywhere. The app works entirely offline on your device.

AES-256 Encryption
Set a password to encrypt all your data with military-grade AES-256-CBC encryption. Your period dates, notes, and symptoms are encrypted at rest using SHA-256 key derivation with random initialization vectors.

SQLite Database
All data is stored in a local SQLite database using Capacitor's native SQLite plugin on Android and iOS, with a web fallback for PWA mode.

Zero Data Collection
No analytics. No crash reporting. No tracking. No cloud sync. No account creation. Your data is yours alone.

Local Reminders

Never forget to log your period again. Set a daily reminder at your preferred time and receive a local push notification. All notifications are scheduled locally on your device — no server involved.

- Configurable reminder time
- 7-day batch scheduling
- Enable/disable toggle
- Works on Android and iOS

Export Your Data

Export your period history and daily logs anytime:

CSV Export
Download a spreadsheet-ready CSV file with all your records. Perfect for sharing with your doctor.

PDF Export
Generate a clean, formatted PDF with your period history or daily logs. Includes date ranges, cycle lengths, and symptom summaries.

All exports are local downloads — nothing is uploaded to any server.

3 Languages Built In

Switch between English, Español, and Français instantly from Settings. All UI labels, calendar months, symptom names, and instructions are fully translated. Your data stays the same — only the interface changes.